News Release

NYMEX Holdings Completes 10% Investment in Montreal Exchange (MX)

Fri Mar 23 2007

NEW YORK, NY, March 23, 2007 — NYMEX Holdings, Inc. (NYSE: NMX), the parent company of the New York Mercantile Exchange, Inc. (NYMEX), the world's largest physical commodity exchange, today closed the purchase of a 10% equity stake in Montreal Exchange Inc. (MX), Canada's financial derivatives exchange. NYMEX and MX also announced the creation of Canadian Resources Exchange Inc. (CAREX), their new joint business venture dedicated to the Canadian energy marketplace.

NYMEX purchased the equity stake for an aggregate price of approximately $78 million, and the two exchanges jointly funded CAREX with approximately $3.5 million.

NYMEX Chairman Richard Schaeffer said, "We are gratified to move our partnership with the Montreal Exchange to the next step with our equity purchase and the establishment of CAREX. We are excited to work with MX to create dynamic and innovative risk management tools to the Canadian commodities industry."

In the coming months, CAREX, a Canadian corporation with its principal place of business in Calgary, Alberta, expects to offer trading and clearing services of over the counter (OTC) and on-exchange futures and options contracts for physical and financial settlement relating to Canadian-based energy (including natural gas, crude oil and electricity), metals and soft commodities.

About NYMEX Holdings, Inc. NYMEX Holdings, Inc. (NYSE:NMX) is the parent company of the New York Mercantile Exchange, Inc., the world's largest physical commodities exchange, offering futures and options trading in energy and metals contracts and clearing services for more than 300 off-exchange energy contracts. Through a hybrid model of open outcry floor trading and electronic trading on CME Globex® and NYMEX ClearPort®, NYMEX offers crude oil, petroleum products, natural gas, coal, electricity, gold, silver, copper, aluminum, platinum group metals, emissions, and soft commodities contracts for trading and clearing virtually 24 hours each day. Further information about NYMEX Holdings and the New York Mercantile Exchange is available on the NYMEX website at http://www.nymex.com.

About Montreal Exchange Montreal Exchange Inc. (MX) is Canada's financial derivatives exchange. MX offers trading in Canadian interest rate, index and equity derivatives. Clearing, settlement and risk management services are provided by a AA rated clearinghouse, the Canadian Derivatives Clearing Corporation, fully owned by the MX. Our integrated trading and clearing services are supported by an MX proprietary suite of exchange technologies, known as SOLA®. The MX is a significant shareholder and the technical operator of the Boston Options Exchange (BOX), a U.S. automated equity options market. The Montreal Climate Exchange (MCeX) – which aims at becoming the first regulated environment market in Canada – is a joint venture of the Chicago Climate Exchange® and the MX. For more information about MX, please visit www.m-x.ca.

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Forward Looking and Cautionary Statements
This press release may contain forward–looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to our future performance, operating results, strategy, and other future events. Such statements generally include words such as could, can, anticipate, believe, expect, seek, pursue, and similar words and terms, in connection with any discussion of future results. Forward–looking statements involve a number of assumptions, risks, and uncertainties, any of which may cause actual results to differ materially from the anticipated, estimated, or projected results referenced in forward–looking statements. In particular, the forward–looking statements of NYMEX Holdings, Inc., and its subsidiaries are subject to the following risks and uncertainties: the success and timing of new futures contracts and products; changes in political, economic, or industry conditions; the unfavorable resolution of material legal proceedings; the impact and timing of technological changes and the adequacy of intellectual property protection; the impact of legislative and regulatory actions, including without limitation, actions by the Commodity Futures Trading Commission; and terrorist activities and international hostilities, which may affect the general economy as well as oil and other commodity markets. We assume no obligation to update or supplement our forward–looking statements.

Contact: Anu Ahluwalia, 212-299-2439 or  Keil Decker, 212-299-2209

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